1. Life-cycle cost analysis for bridges;Frangopol,1999
2. Life-Cycle cost approach to bridge management in the Netherlands, Transportation Research Circular E-C049;Klatter,2003
3. NSW. Minister for Industrial Relations, Infrastructure statement 2015–2016. Budget paper No. 2. http://www.budget.nsw.gov.au/__data/assets/pdf_file/0003/126372/BP2_Infrastructure_Statement_2015-16_dnd.pdf, 2015 (Accessed 25.02.16)
4. The Highland Council, Allocation of road maintenance budget −2014/15. http://www.highland.gov.uk/download/meetings/id/65208/item_8i_allocation_of_road_maintenance_budget_-_201415, 2014 (Accessed on 25.02.16)
5. The Highland Council, Distribution of road maintenance budget −2015/16. http://www.highland.gov.uk/download/meetings/id/67371/item_12_distribution_of_road_maintenance_budget_%E2%80%93_201516, 2015 (Accessed 25.02.16)